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Detection method and experimental system based on conductometric titration dirt property parameters

A characteristic parameter and conductometric titration technology, which is applied in the direction of material electrochemical variables, material resistance, etc., can solve the problems of inability to accurately measure calcium carbonate crystallization scale and particle scale induction period, and inability to measure the thickness of scale layer, etc.

Inactive Publication Date: 2012-12-05
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the device can conduct real-time online detection of the four properties of the tube side convective heat transfer enhancement technology, including heat transfer effect, flow resistance, fouling characteristics, and cleaning characteristics, but it cannot accurately determine the induction period of calcium carbonate crystallization and granular fouling. It is also impossible to measure parameters such as scale thickness

Method used

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  • Detection method and experimental system based on conductometric titration dirt property parameters
  • Detection method and experimental system based on conductometric titration dirt property parameters
  • Detection method and experimental system based on conductometric titration dirt property parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] see figure 1 with figure 2 , The four-lobed arc tube dirt characteristic parameter detection sensor 8-1, 8-2 provided by the present invention selects a length of 200mm, an inner diameter of 12mm, and a wall thickness of 2mm, and the material is 20# low carbon steel pipe, stainless pipe or copper pipe as the sensor body , Firstly divide its cross-section into four equidistant points in the circumferential direction, and divide it into four equivalences along the axial direction of its adjacent two equidistant points using wire cutting technology, each of which corresponds to a central angle of 90 degrees, which is adjacent when cutting The two lobes are glued together one by one in order. An insulating layer I is set between each adjacent two lobes. The material is ordinary plastic film and the thickness is 0.2mm, so that the upper and lower lobes and the left and right lobes each form a pair of conductivity electrodes, and Make it meet the following process requirement...

Embodiment 2

[0051] see Figure 5 , A dynamic and static simulation multifunctional experimental system based on conductivity titration of dirt characteristic parameters. It is composed of tubular analog heat exchanger, titration device, working fluid circulation system, cooling system, and online detection program; tubular analog heat exchanger The middle sections of the two test tubes 7-1 and 7-2 of 11 are respectively equipped with four-lobed arc tube dirt characteristic parameter detection sensors 8-1 and 8-2. One end of the two test tubes 7-1 and 7-2 are respectively It is connected to the bottom of the upper water tank 4 of the working fluid circulation system, and the other end is respectively connected to the lower water tank 12 of the working fluid circulation system; the bottom of the tubular analog heat exchanger 11 is equipped with a number of parallel electric heating rods 9-1, 9 -2, 9-3, used to heat the temperature of the water bath to the experimental set value; the working m...

Embodiment 3

[0060] see Image 6 , Based on the conductivity titration of the dirt characteristic parameter dynamic and static combined simulation multi-function experimental system, the online detection program consists of system diagram, curve display, online calculation, parameter query, parameter setting, alarm record, operation record, report printing, manual data input, refresh It is composed of functional modules such as saving, online help and exiting the system. The system diagram function module is used to display the structure diagram of the entire detection system; the curve display function module has two sub-modules: historical curve and real-time curve, and each module has a "display parameter selection bar", including dirt thermal resistance and electrical conductivity , Temperature and other parameters, select the options to be displayed from the "A tube" or "B tube" box, click the "OK" button, the corresponding curve will be displayed in the graphic display window; the onli...

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Abstract

The invention provides a detection method and a dynamic-static state combined simulation multifunctional experimental system based on conductometric titration dirt property parameters. The conductometric titration based dirt property parameter detection method can accurately control the concentration of calcium ions or carbanions in water solution to further control the forming time of calcium carbonate crystallization dirt, is convenient to accurately measure the induction period of the crystallization dirt, continuously compares the alternating impedance of horizontal electrode pairs with vertical electrode pairs on line, can accurately measure the induction period of particle dirt under the same condition, can obtain the dirt thermal resistance which is the most true to the actual operation condition and is measured at the dynamic station and can simultaneously measure the dirt amount, the dirt layer thickness and various parameters while detecting the induction period; and the system can quickly and accurately monitor the real-time change of the thickness of the dirt layer on the heat conduction surface and provide a credible and convenient tool for on-line detection for studying the change rule of measurement parameters caused by the forming process of salt deposit and influence thereof.

Description

Technical field [0001] The present invention mainly relates to basic theories in the fields of power engineering and engineering thermophysics, automatic detection technology and applied chemistry. Specifically, it relates to a simulation experimental detection device that can accurately determine the induction period, scale thickness and amount of calcium carbonate on-line, real-time and accurately, and in particular to a detection method of dirt characteristic parameters based on conductivity titration and a combined dynamic and static simulation multifunctional experimental system . Background technique [0002] Significant progress has been made in dirt monitoring technology in the past decade, and new technologies such as optical fiber, infrared, ultrasonic and artificial intelligence have been continuously applied in dirt monitoring research. However, these technologies and devices are either limited to the laboratory and some special objects, or need to further study thei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/44G01N27/18
Inventor 杨善让曹生现姚华刘秀伟徐志明郑康乐陈延岭
Owner NORTHEAST DIANLI UNIVERSITY
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