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Detection method and dynamic-static state combined simulation multifunctional 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 and material resistance, can solve the problems of inability to measure the thickness of the scale layer, and the inability to accurately measure the calcium carbonate crystallization scale and particle scale induction period.

Inactive Publication Date: 2010-02-24
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 dynamic-static state combined simulation multifunctional experimental system based on conductometric titration dirt property parameters
  • Detection method and dynamic-static state combined simulation multifunctional experimental system based on conductometric titration dirt property parameters
  • Detection method and dynamic-static state combined simulation multifunctional experimental system based on conductometric titration dirt property parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] See figure 1 and figure 2 , the four-lobe arc tube dirt characteristic parameter detection sensor 8-1 provided by the present invention, 8-2 selects long 200mm for use, inner diameter 12mm, wall thickness 2mm, material is 20# low carbon steel pipe, stainless steel pipe or copper pipe as sensor main body , first divided into four equally divided points in the circumferential direction of its cross section, and divided into four equal lobes along the axial direction of two adjacent equal points, using wire cutting technology, each petal corresponds to a central angle of 90 degrees, adjacent to each other when cutting The order of the two petals is bonded together one by one, and an insulating layer I is set between each adjacent two petals. Make it meet the following process requirements: ①The roundness of the flow section in the pipe does not change before and after bonding; ②The inner diameter is basically equal before and after bonding. In this way, the upper and lo...

Embodiment 2

[0051] See Figure 5 , a dynamic and static joint simulation multifunctional experimental system of fouling characteristic parameters based on conductometric titration, which is composed of a tubular simulated heat exchanger, a titration device, a working fluid circulation system, a cooling system, and an online detection program; the tubular simulated heat exchanger The middle sections of two test tubes 7-1 and 7-2 of 11 are equipped with four-lobed arc tube dirt characteristic parameter detection sensors 8-1 and 8-2 respectively, and one end of the two test tubes 7-1 and 7-2 respectively It is connected to the bottom of the upper water tank 4 of the working medium circulation system, and the other end is respectively connected to the lower water tank 12 in the working medium circulation system; the bottom of the tubular simulated heat exchanger 11 is equipped with several parallel electric heating rods 9-1, 9 -2, 9-3, used to heat the temperature of the water bath to the exp...

Embodiment 3

[0060] See Figure 6 , dynamic and static joint simulation of dirt characteristic parameters based on conductometric titration. The online detection program in the multifunctional experimental system consists of system diagram, curve display, online calculation, parameter query, parameter setting, alarm record, operation record, report printing, manual data input, refresh It consists of functional modules such as saving, online help and exiting the system. The system diagram function module is used to display the structural diagram of the entire detection system; the curve display function module has two sub-modules, the historical curve and the real-time curve, and any module is equipped with a "display parameter selection bar", including dirt thermal resistance, conductivity , temperature and other parameters, select the option to be displayed from the "A tube" or "B tube" box, click the "OK" button, the graphic display window will display the corresponding curve; the online...

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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 invention mainly relates to basic theories in the fields of power engineering, engineering thermophysics, automatic detection technology and applied chemistry. Specifically, it relates to a simulation experiment detection device that can accurately measure calcium carbonate scaling induction period, scale thickness and scale amount on-line, in real time, and especially relates to a measurement method of fouling characteristic parameters based on conductometric titration and a dynamic and static joint simulation multifunctional experimental system . Background technique [0002] In the past ten years, dirt monitoring technology has made remarkable progress, and new technologies such as optical fiber, infrared, ultrasonic and artificial intelligence have been continuously applied to dirt monitoring research. However, these technologies and devices are only limited to laboratories and some special objects, or their mechanisms and methods need to be f...

Claims

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Application Information

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Patent Type & Authority Applications(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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